Immobilization

Immobilization:

Immobilization means that the car's start function is blocked. The car cannot be started before it is mobilized by the correct key being inserted in the ignition.
As a condition, the system requires a valid code which is verified and approved by TWICE before mobilization can take place. The code is passed to the system via the key or remote control.
To receive the code information, an antenna unit is placed next to the ignition lock. The antenna unit receives a unique identification code from the car key when it is placed in the ignition lock, or from the remote control if one of the buttons is pressed when the ignition is ON (+15 circuit)

Bus communication
The identification code from the car key transponder is received at pin 39 of the TWICE control module via the antenna unit and verified by TWICE.
If the code is approved by TWICE, a code is sent via the MIU to the engine management system. This must be approved by the engine management system before or when the car is started, otherwise the engine is turned off.


IMPORTANT
TWICE, MIU and the engine management system must be programmed together. If any system is changed, reprogramming is required.


Start check
The starter relay is controlled by the TWICE control module. The relay cannot be operated before an approved transponder code has been verified by TWICE after the ignition has been turned on.